| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.jack.frontend; |
| |
| import com.android.jack.ir.ast.JNode; |
| import com.android.jack.ir.ast.JVisitor; |
| |
| import java.util.Stack; |
| |
| import javax.annotation.Nonnull; |
| |
| /** |
| * Parent setter. |
| */ |
| public class ParentSetter extends JVisitor { |
| |
| public ParentSetter() { |
| super(false /* needLoading */); |
| } |
| |
| @Nonnull |
| private final Stack<JNode> nodes = new Stack<JNode>(); |
| |
| @Override |
| public boolean visit(@Nonnull JNode node) { |
| if (!nodes.isEmpty()) { |
| node.updateParents(nodes.peek()); |
| } |
| nodes.push(node); |
| return super.visit(node); |
| } |
| |
| @Override |
| public void endVisit(@Nonnull JNode node) { |
| nodes.pop(); |
| super.endVisit(node); |
| } |
| } |